I able 286.-- Bathymetric occurrence of Pandora sp. 

 based on 8 samples and 11 specimens. 



Table 290.— Bathymetric occurrence of Lyons i a hyalina. 

 based on 129 samples and 544 specimens. 



Depth range (m) 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Percentage of 



Samples 



25.0 

 25.0 

 37.5 



12.5 



Specimens 



27.3 

 18.2 

 36.3 



18.2 



Depth range (m) 



Percentage of 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Samples 



32.6 

 34.8 

 32.6 



Specimens 



21.5 

 46.1 

 32.4 



Total 



100.0 



100.0 



Total 



100.0 



Table 287. —Occurrence of Pandora sp. in bottom sediments, 

 based on six samples and eight specimens. 



Table 291. --Occurrence of Lyons ia hyalina in bottom sediments, 

 based on 115 samples and 492 specimens. 



Bottom type 



Percentage of 



Samples 



Specimens 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



83.3 

 16.7 



100.0 



75.0 

 25.0 



Bottom type 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Percentage of 



Samples 



4.3 



7.8 

 78.3 

 7.0 

 1.7 

 0.9 



100.0 



Specimens 



3.9 

 90.7 

 2.0 

 1.6 

 0.2 



100.0 



Table 288.— Bathymetric occurrence of Lyons i a arenosa, 

 based on 20 samples and 81 specimens. 



Table 292. --Bathymetric occurrence of Lyons i a sp. , 

 based on five samples and six specimens. 



Depth range (m) 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Percentage of 



Samples 



28.6 

 28.6 

 38.1 



4.7 



Specimens 



21.0 



24.7 

 53.1 



1.2 



Depth range (m) 



Percentage of 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Samples 



40.0 

 20.0 

 40.0 



Specimens 



33.3 

 16.7 

 50.0 



Total 



100.0 



Total 



100.0 



100.0 



Table 289. — Occurrence of Lyonsia arenosa in bottom sediments, 

 based on 19 samples and 76 specimens. 



Table 293. — Occurrence of Lyonsia sp. in bottom sediments, 

 based on five samples and six specimens. 



Bottom type 



Percentage of 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Samples 



60.0 

 10.0 

 10.0 



Specimens 



67.1 



5.3 

 7.9 



100.0 



Bottom type 



Percentage of 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Samples 



60.0 

 20.0 



100.0 



Specimens 



16.7 



66.6 

 16.7 



100.0 



167 



